jackbenny/netcalc
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A working version is ready

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Jack-Benny Persson 2014-06-01 13:35:07 +02:00
parent 025fe841de
commit ac2096776e
1 changed files with 42 additions and 14 deletions
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56
netcalc.php
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@ -1,23 +1,51 @@
<?php <?php
$version="0.1";
if (isset($argv[1])) function print_usage()
{ {
//$value=$argv[1]; print "netcalc.php $GLOBALS[version]\n";
$value=$argv[1]; print "Jack-Benny Persson <jack-benny@cyberinfo.se>\n";
if ($value < 0 || $value > 32) print "\n";
{ print "Usage: php netcalc.php <netmask>\n";
print "Please enter an integer between 0 and 32 only\n"; print "Example: php netcalc.php 24\n";
exit;
}
$base=32-$value;
$netsize=pow(2, $base);
$hosts=$netsize-2;
print "$hosts\n";
} }
else // Check if first argument is set and and if not, print usage
if (!isset($argv[1]))
{ {
print "Enter something\n"; print_usage();
exit(1);
} }
$value=$argv[1];
// Check if our argument was a numeric value or not
if (!is_numeric($value))
{
print "Please enter numbers only (between 0 and 32)\n";
exit(1);
}
// Check if the value is between 0 and 32
if ($value < 0 || $value > 32)
{
print "Please enter an integer between 0 and 32 only\n";
exit(1);
}
// Calculate the diffrent values
$base=32-$value;
$netsize=pow(2, $base);
$hosts=$netsize-2;
if ($hosts < 0)
{
$hosts = 0;
}
// And now, finally, print the values
print "Netmask: $value\n";
print "Total number of addresses: $netsize\n";
print "Number of usable addresses for hosts: $hosts\n";
exit(0);
?> ?>